colorado river

Fewer than three dozen people have ever hiked the entire 800-mile length of the Grand Canyon. Two journalists on assignment for National Geographic completed the journey last month and have now been nominated as the magazine’s 2017 Adventurers of the Year . Arizona Public Radio’s Ryan Heinsius reports.

A university research group says the next president will have to act fast to help the Colorado River continue serving millions of city-dwellers, farmers, Indian tribes and recreational users in the U.S. Southwest.